<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>数据可视化面板</title>
    <style>
        html, body {
            margin: 0;
            padding: 0;
            width: 100%;
            height: 100%;
            font-family: Arial, sans-serif;
            overflow: hidden;
        }
        #dashboard {
            width: 100vw;
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            background-color: #00000000;
            border-radius: 6px;
        }
        #background {
            width: 100vw;
            height: 100vh;
            background-color: #141414;
            border-radius: 6px;
            position: relative;
            display: flex;
            flex-direction: column;
        }
        #topBar {
            width: 100%;
            height: 50px;
            background-color: #1E1E1E;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 20px;
            margin-bottom: 4px;
            border-radius: 6px;
            box-sizing: border-box;
            color: #FFFFFF;
        }
        #middleContainer {
            flex: 1;
            display: flex;
            background-color: #141414;
        }
        #leftPanel {
            width: 250px;
            background-color: #3A3A3A;
            margin-right: 4px;
            margin-left: 4px;
            border-radius: 6px;
        }
        #mainView {
            flex: 1;
            background-color: #4A4A4A;
            margin-right: 4px;
            border-radius: 6px;
        }
        #bottomToolbar {
            width: 100%;
            height: 50px;
            background-color: #7e7e7ecb;
            margin: 4px 0 0 0;
        }
    </style>
</head>
<body>
    <div id="dashboard">
        <div id="background">
            <div id="topBar">
                <button>导入</button>
                <button>导出</button>
            </div>
            
            <div id="middleContainer">
                <span id="leftPanel"></span>
                <span id="mainView"></span>
            </div>
            
            <div id="bottomToolbar">
                
            </div>
        </div>
    </div>
</body>
</html>